CN1421322A - Anti-fake securency with detecting device - Google Patents

Anti-fake securency with detecting device Download PDF

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Publication number
CN1421322A
CN1421322A CN02148252A CN02148252A CN1421322A CN 1421322 A CN1421322 A CN 1421322A CN 02148252 A CN02148252 A CN 02148252A CN 02148252 A CN02148252 A CN 02148252A CN 1421322 A CN1421322 A CN 1421322A
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CN
China
Prior art keywords
false proof
window
transparent
polarization
bill
Prior art date
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Granted
Application number
CN02148252A
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Chinese (zh)
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CN1235752C (en
Inventor
J·C·泰勒
B·A·哈德威克
W·K·杰克逊
P·齐恩特克
C·R·希伯特
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Securency International Pty Ltd
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Securency Pty Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/328—Diffraction gratings; Holograms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/342—Moiré effects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/351—Translucent or partly translucent parts, e.g. windows
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/04—Preventing copies being made of an original
    • G03G21/043—Preventing copies being made of an original by using an original which is not reproducible or only reproducible with a different appearence, e.g. originals with a photochromic layer or a colour background
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/003—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using security elements
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G07D7/12—Visible light, infrared or ultraviolet radiation
    • G07D7/128—Viewing devices
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/20—Testing patterns thereon
    • G07D7/202—Testing patterns thereon using pattern matching
    • G07D7/206—Matching template patterns
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/20—Testing patterns thereon
    • G07D7/202—Testing patterns thereon using pattern matching
    • G07D7/207—Matching patterns that are created by the interaction of two or more layers, e.g. moiré patterns
    • B42D2035/36—
    • B42D2035/44—
    • B42D2035/50—

Abstract

A self-verifying security document, such as a banknote comprises a flexible sheet formed from a plastics substrate bearing indicia. The sheet has a window of transparent plastics material which includes self-verification means for verifying a security device provided at a laterally spaced second portion of the sheet when the sheet is bent or folded to bring the window into register with the security device. The self-verification means may be an optical lens for reading an area of microprinting. In another embodiment, the self-verification means may be an optical filter for viewing an area printed with metameric inks. In other embodiments, the self-verification means and the security device may be polarising windows or Moire inducing patterns.

Description

The false proof bill that contains verifying attachment
The application is that application number is 97198717.3 (PCT/AU97/00675), the applying date to be on October 8th, 1997, to be entitled as the dividing an application of Chinese patent application of " self-verifying security documents ".
Technical field
The present invention relates to for example false proof bill of banknote and so on, particularly relate to a kind of like this false proof bill, it comprises the device that is used to check this false proof bill or other bill.
Background technology
The someone has advised a variety of for example false proof device or the features of false proof bill such as banknote, traveller's check of can be used for up to now.These false proof devices or feature comprise: light becomes design, for example holographic photography and diffraction grating; False proof lines; Miniature printing; Fine rule or " spun gold " pattern; The More responds to pattern; And fluorescent ink, phosphor ink, pearl ink or the photochromatic printing ink such as metamerism printing ink.
Metamerism phenomenon (metamerism) is described to " eyes receive the characteristic that same color is felt with brain (under specific illumination condition) from two objects with different spectral power distribution ".Metamerism printing ink has unique display characteristic, that is, when observing under different illumination conditions, its color can change.For example, when being when observing under the so-called daylight environment at some specific white lights, two kinds of printing ink with different condition color matching characteristic may manifest identical color, but when when (for example under incandescence or colour filter light) under the different illumination conditions is observed, these two kinds of printing ink will manifest different reflection colours, thereby both can be made a distinction.Optical effect with printing ink of metamerism characteristic is widely used in false proof device, and this false proof device for example can prevent the forgery attempt of duplicating and so on by computer scanning and autochromy.When the color-match of attempting with original paper, colored photocopying and colored printing are normally constrained to four kinds of different pigment (being black, blue-green, yellow and redness).When the needs copy condition is matched colors, compare with raw image, under the particular light condition, manifest the color identifying of the image of different colours, be not very obvious on duplicate.Also described among the BrP GB 1407065 and adopted metamerism printing ink as the anti-fake situation of making feature or false proof device.
Utilize metamerism printing ink as a disadvantage of false proof device to be, they need the help in optical filter or other external world just can provide the checking security device required illumination condition.Some other false proof device also needs extraneous help just can test.For example, fluorescent ink needs a ultraviolet light source to test, and miniature printing, fine rule and spun gold pattern etc. then need an amplifying lens to test.In addition, up to now, only when attempting to utilize autochromy to duplicate a false proof bill, could serve as anti-fake manufacturing apparatus effectively when responding to pattern with More that the similar pattern of a double exposure produces striped or Moire effect mutually during mutual interference.Also have, the false proof bill with moire pattern needs an independent finder to check.
In Australian Patent AU-A-87665/82, disclosed a kind of false proof bill and a kind of method of producing false proof bill, wherein will cause the both side surface that opaque ink coating is coated on the sheet form base that is formed by transparent plastic film.False proof bill can be formed in the both sides that opaque coating are not coated on transparent plastic substrate in some zone.These transparent clear areas are called " window ", are particularly useful for comprising false proof device, and for example diffraction grating, light become design and relief image, can be checked them at transparent region or window by the both sides of false proof bill.
Summary of the invention
The present invention suggestion in false proof bill, adopt a transparent window be used as a kind of be used for to be positioned at this bill locational in addition or be positioned at that false proof device on another false proof bill is tested, the device of reinforcement or optical change.
According to an aspect of the present invention, a kind of false proof bill is provided, comprise a sheet material that forms by the substrate of tape label, described sheet material has a part that is formed by transparent plastic material, wherein said transparent part comprises verifying attachment, this verifying attachment comprises an optical filter or polarization filter, or an interference feature, so that the false proof device on another different sheet materials is tested.
Except being used to check or check the false proof device on another different sheet materials, described self-checking unit can also be used to checking or checks at the locational false proof device in the lateral separation of same sheet material.
This false proof bill preferably is made of the sheet form base of transparent plastic material, applied at least one opaque coating on the one or both sides of this substrate, those zones that just will wish in false proof bill to form transparent, a unmarked part of essence or " window " foreclose.Therefore, at least one opaque layer just partly covers substrate surface, and it is unmarked basically staying next first at least.
At least one opaque layer on plastic-substrates both sides or a side can comprise the ply of paper that carries mark.Perhaps, in a preferred embodiment, comprise that in each side of sheet material at least one is coated on the opaque ink coating on transparent plastic substrate surface.Except being formed by transparent plastic material with one or several zones that one or several windows are provided, false proof bill of the present invention can almost all be formed by opaque paper or stacked structure of basement.
Described false proof bill can adopt any suitable shape, but under flexible sheet material situations such as banknote, check rectangle preferably.Under the situation of square or rectangle sheet material, first and second parts can be arranged to like this, that is, when along the center line pleated sheet, first and second parts are aimed at.For have one along its length main axis and the rectangle sheet material of the inferior axis of a broad ways, first and second parts are to be provided with like this, that is,, first and second parts are aimed at mutually when along overlapping or being parallel to a straight line of main axis or inferior axis when folding.Perhaps, when along an axis with respect to the primary and secondary axis tilt (for example diagonal line of rectangle sheet material) pleated sheet, first and second parts are aimed at mutually.
Except can folding, can also be with flexible sheet material crooked or be bent into a cylinder and first and second parts are aimed at mutually, so that check or verify false proof device on the second portion by the self-checking unit in the first.
In one embodiment of the invention, self-checking unit can comprise that one is arranged on transparent first or the optical lens on the window, be arranged on the feature that false proof device on the second portion comprises a printing or imitation die stamping, when observing when the optical lens observation that sees through false proof bill or through another optical lens on the similar false proof bill, this feature can be checked through.
The optical lens that is provided with in the window of false proof bill of the present invention can be the Fresnel amplifying lens that is used for the top projector type.This amplifying lens can form like this, that is, make transparent unmarked parts of plastics distortion and have the concentric circles line with embossed, etching or other means.Perhaps, can make amplifying lens like this, that is, apply a kind of ultraviolet ray (UV) or other can harden varnish or coating that is printed with desired structure, make this coating have permanance by curing process subsequently.Be arranged on micro-printing thing, little image or fine rule or spun gold pattern on another part that amplifying lens in the flexible anti counterfeit bill window can be used for amplifying this false proof bill or another similar false proof bill.As the modification of Fresnel amplifying lens, also can adopt multiple microlens array or lenticular lens array.
Self-checking unit can comprise the optical lens of another kind of form, for example the distortion lens.The distortion lens can make false proof device, promptly are arranged on feature or image warping on false proof bill another part, perhaps can revise distortion feature or image on false proof bill another part.
In another embodiment of first aspect present invention, false proof device comprises the zone that a usefulness metamerism printing ink is printed, and self-checking unit comprises the optical filter that is used to observe the zone of being printed by metamerism printing ink.Optical filter preferably is arranged to like this,, can limit the Wavelength distribution of the light that incides and/or come from the regional reflex printed with metamerism printing ink that is.This can realize by in transparent, the unmarked part of essence painted optical filter being set.It is environment limited or that change that painted transparent window can produce wavelength, so as to disclosing the change color characteristic of the image of printing with metamerism printing ink, thereby can check the true and false of banknote.
Self-checking unit comprises a colour light filter sheet, is used to observe the zone with the printing of metamerism printing ink on same false proof bill or different preventing counterfeit bill.
The production that can in all sorts of ways of optical filter in the transparent window.A kind of method that can produce colo(u)r filter is, sneaks into suitable pigment in polymkeric substance and make plastic sheeting have a kind of total color when producing the plastic sheeting substrate.In another approach, can utilize intaglio plate or offset printing process on clear plastic window, to apply painted varnish of one deck or coating.
Sheet material can comprise the unmarked window of the essence that is formed by transparent plastic material, this window comprises the self-checking unit with polarization characteristic, can check the false proof device of another the locational second transparent polarization window form on same false proof bill or the different preventing counterfeit bill.
Polarization is to be widely used in for example a kind of optical effect of the based article of polarized light sunglasses.Light wave from lighting source does not still vibrate on plane vertical or level, and can vibrate on all planes of between.Polarization makes light wave only be restricted in one direction exactly.When the axis of polarization of the second polarization medium that allows linearly polarized light pass through during perpendicular to the first polarization medium, light intensity is near zero.
In the present invention, come this polarization phenomena is used by the transparent window on the false proof bill of for example polymer banknote and so on.A transparent window is stacked to (these two windows all have the plane polarization characteristic) on one second window, just can observes and comprise the polarization characteristic of light in disappearing in.The second polarization window also can appear on another different false proof bill.Under each situation,, transparent polarization window can realize polarization effect by just being made up mutually.
When the polarization window is on the diverse location of same flexible anti counterfeit bill, the first and second polarization windows are preferably arranged like this, promptly, when the flexible anti counterfeit bill is folded and makes two polarization windows mutually on time, the axis of polarization of the second polarization window is along extending with the axis of first polarization window direction at angle, thereby the light intensity by these two windows is weakened.If in the false proof bill of the axis of polarization of the first and second polarization windows after folding is orthogonal basically, the light intensity that then sees through window is close to zero.
The banknote that has the polarization window can in all sorts of ways and form.In a possible embodiment, be along some directions transparent plastic-substrates to be stretched in process of production.In other methods, can add liquid crystal being used for forming in substrate or the transparent polymeric film as base coating.
Self-checking unit comprises that one has the feature of the first line group according to another embodiment of the present invention, and false proof device comprises that one has the feature of the second line group, when false proof bill is bent or folding and make self-checking unit and false proof device on time, can produce interference effect.Preferably, self-checking unit and false proof device are that the More responds to pattern.
According to a forth aspect of the invention, a kind of false proof bill is provided, comprise a flexible sheet material that forms by the substrate of tape label, described sheet material has the first of being made by transparent plastic material, this first comprises the self-checking unit of responding to the form appearance of pattern with the More, responds to pattern in order to check another More on the diverse location of same false proof bill or on the different preventing counterfeit bill.
It is to be made of the fine rule group that the More responds to pattern, and the fine rule group of first moire pattern tilts at an angle with respect to the fine rule group of second moire pattern, and when first and second moire patterns when stacked, described fine rule group can produce the light change effect.The light that sees through stacked or overlapping mutually parallax group can produce the dark band that is known as " talbot striped ", and they can form an image.
The someone mentioned and can adopt moire interference patterns as false proof device or the anti-fake feature of making in false proof bill in the past, to prevent utilizing photocopying to forge.Yet in these bills, Moire effect or striped just just can display comprising that the More responds in the reflection of light phase replicated image of false proof bill of pattern.In the present invention, one More's influence chart as if be combined in the clear plastic window as the self-test anti-fake device, it on another position that is arranged on same false proof bill or another More on another false proof bill respond to the Moire effect that pattern produces an energy reliable authentication bill.
When first and second Mores are responded to pattern be arranged on individual flexible anti counterfeit bill on laterally spaced two diverse locations the time, first and second Mores respond to pattern and preferably arrange in such a way, promptly, when the flexible anti counterfeit bill is folded and when making two Mores respond to pattern to aim at, the line group that second More responds to pattern tilts with respect to the line group that first More responds to pattern.
Be arranged in the transparent window to form the line group that a More responds to pattern and can form with simple printing, embossed or etching technique.
According to a further aspect of the invention, a kind of method of the false proof bill of either side as described above that is used to check is provided, and this method comprises the steps: flexible sheet material is carried out bending, folding or distortion and the sheet material first that comprises self-checking unit is aimed at mutually with the false proof device on being arranged on the sheet material second portion.
Description of drawings
Below in conjunction with accompanying drawing each embodiment of the present invention is described.
Fig. 1 is the planimetric map according to a banknote of first embodiment of the invention;
Fig. 2 is the view after banknote shown in Figure 1 folds;
Fig. 3 is the planimetric map according to a banknote of second embodiment of the invention;
Fig. 4 is the view after banknote shown in Figure 3 folds;
Fig. 5 is the planimetric map according to a banknote of third embodiment of the invention;
Fig. 6 is the view after banknote shown in Figure 5 folds;
Fig. 7 is the planimetric map according to a banknote of fourth embodiment of the invention;
Fig. 8 is the view after banknote shown in Figure 7 folds.
Embodiment
Banknote 1 shown in Fig. 1 and 2 roughly is a rectangle, and it has substantially parallel side 6 and 7 and substantially parallel end 8 and 9, and comprises flexible sheet substrate 2 tape label 3, that made by transparent plastic.The overwhelming majority of the upper and lower surface of substrate 2 is all covered by opaque layer.In this article, the zone that has color, pattern, image, shape, line group, letter, numbers and symbols etc. contained in term " mark ".For simplicity, except false proof device 4, just beyond the micro-printing zone 10 that is formed by word " VALID " repetition several, face amount " " is unique mark that illustrates 3 among Fig. 1 and Fig. 2.Though word " VALID " is that significantly the size of this micro-printing thing can be unconspicuous, perhaps can with the naked eye distinguish reluctantly in Fig. 1.
As shown in Figure 1, the opaque layer that has mark does not take all surfaces of sheet form base 2, thereby reserves a transparent part 5 on substrate, and this position has at least part not topped by opaque layer.This is transparent, essence is that unmarked part 5 just constitutes " window " on the banknote, but by this window transmitted light.
Transparent plastic substrate 2 is preferably made with transparent polymeric material, and this polymeric material can be made up of at least a biaxially oriented polymer thin film.Substrate can comprise the single thin film that is formed by polymeric material.Perhaps, substrate can be made of the laminate two-layer or the biaxially oriented polymer thin film of multi-layer transparent of type described in the Australian Patent No.AU-A-87665/82, and the content of this patent is quoted at this only for reference.
The opaque ink layer of mark 3 can be made of the various any or multiple inks that cause in the opaque ink that can be used in print money or other false proof bill.For example, the opaque ink layer can be made of the coating that pigment is arranged, and this coating comprises and a kind ofly is scattered in bonding agent or as pigment in the carrier of the hot activation crosslinkable polymeric material described in the patent No.AU-A-87665/82, such as titania.Perhaps, the substrate 2 of being made by transparent plastic can be folded in the printing or apply between the markd opaque layer made of paper.
Transparent, essence does not have the part of mark or the corner that window 5 is positioned at rectangle banknote one end 8, and false proof device 4 is positioned at same side 6 on the banknote but a corner on another opposite end 9.
In embodiment illustrated in figures 1 and 2, transparent, essence does not have the part of mark or the self-checking unit that window 5 comprises an optics amplifying lens 11 forms.Therefore, when as shown in Figure 2 when the center line 12 that passes across banknote is folded up banknote 1, can observe the micro-printing zone 10 that constitutes false proof device 4 by amplifying lens 11, at this moment, this micro-printing zone is revealed as the image of amplification.Therefore, false proof bill 1 can carry out self check by certain part of banknote, and the amplifying lenses 11 in the window 5 can be used for checking and checking false proof device 4, just is arranged on the micro-printing zone 10 on another part of banknote 1.
Be also to be understood that the banknote or other false proof bill that are provided with amplifying lens 11 in window 5 can also be used to checking, amplifying and check the micro-printing thing on another banknote or the false proof bill, tiny image or other false proof device.
Amplifying lens can comprise the Fresnel amplifying lens, and these lens can form like this, that is, transparent window 5 is carried out embossed, etching or makes it distortion and produce a series of concentric circles lines.
Fresnel Lenses can form by the embossed technology in the typography.In order to realize required anaclasis effect, must only on a side of film, carry out embossed.If identical imitation die stamping is carried out in two sides to substrate in the embossed process, then can on the surface of an embossed, insert a coating, so that produce required optical lens.Usually adopt gravure technique to carry out embossed, and special printing ink is transferred on banknote or other false proof bill.In gravure technique, can be under High Temperature High Pressure the etching style belling of Fresnel Lenses be printed in the window.
Perhaps, can adopt hot-pressing technique, be commonly used to that promptly light is become device (OVD) and be transferred to technology on the banknote, a Fresnel amplifying lens belling is printed in the window 5.Amplifying lens can also be made like this,, applies a kind of varnish or coating by ultraviolet ray (UV) or other energy-curable that is, and this coating is to print or belling with required structure, reaches admittedly property for a long time by curing process subsequently.
Referring to Fig. 3 and Fig. 4, wherein show a banknote according to second embodiment of the invention.This banknote 20 is similar to the banknote 1 shown in Fig. 1 and 2, and wherein corresponding part is endowed corresponding label.Banknote 20 is roughly to become rectangle, and comprises that one has the flexible sheet substrate 2 of mark 3.The difference of banknote 20 and banknote 1 is that false proof device 4 is to be made of the zone with the metamerism image 22 of metamerism ink printing, and transparent, the unmarked part of essence of substrate 2 or " window " 5 comprise the self-checking unit by tinted windows or " metamerism color filter " 21 formations.
False proof device 4 comprises letter " NPA ", by printing these alphabetical different pieces with different metamerism printing ink, and just can formation condition color matching image 22.As shown in Figure 3, the alphabetical NPA of formation condition color matching image 22 demonstrates identical color under white light.Yet, when bill 20 when fold line 12 is folded up, seeing through metamerism optical filter 21 as shown in Figure 4 observes, the diagonal zones 23 of tiltedly wearing letter 22, using the metamerism ink printing different with the remainder of letter to form shows different colors, perhaps be the different tones that show with a kind of color at least
False proof device 4 by the metamerism ink printing can carry out with the printing technology of standard.Optics or metamerism optical filter 21 in the transparent window 5 can be provided with like this, that is, a kind of or some kinds of suitable pigment when it can comprise production polymeric substrate 2, therefore, transparent, the unmarked window 5 of essence in the banknote that printing forms are painted.Perhaps, can in transparent, clear and the unmarked plastic window of essence, apply one deck stain varnish by gravure or offset printing process.
In Fig. 3 and embodiment shown in Figure 4, in clear plastic window 5, be provided with optics or metamerism optical filter 21, this optical filter can be used for disclosing the change color characteristic of the metamerism image 22 on the banknote.So just provide a kind of extraneous servicing unit (for example optical filter or the light source of not sharing the same light) that need not to check the metamerism image and the self-monitoring banknote of verifying banknote.
Be also to be understood that banknote for example shown in Figure 3, comprise optics or metamerism optical filter in a transparent window can also check and verify another banknote that comprises metamerism printing or metamerism image as a false proof device.
The shape of the banknote 30 of Fig. 5 and third embodiment of the invention shown in Figure 6 is similar to the banknote 1 shown in Fig. 1 and 2 substantially, and wherein corresponding part has also adopted corresponding label.Banknote 30 is with the difference of banknote 1, transparent, the unmarked part of essence of substrate 2 or window 5 comprise the self-checking unit that occurs with the first polarization window, 31 forms, another transparent, unmarked part of essence that false proof device 4 comprises that the form with the second polarization window 32 occurs.
The first polarization window 31 has first a plane polarization axis that for example is parallel to banknote 30 longitudinal axis, and the second polarization window 32 preferably is arranged to have first axis of polarization that is basically perpendicular to the first polarization window 31 (for example along the direction perpendicular to the banknote longitudinal axis).Make the first and second polarization windows 31 and 32 pairs punctual when along fold line 12 banknote 30 being folded up, the light intensity that sees through polarization window 31 and 32 equals zero substantially, shown in the shadow region among Fig. 6 33.
Yet, should be appreciated that the orientation of the first and second plane polarization axis can change.For example, if the first polarization window 31 shown in Figure 5 has oblique angle first a plane polarization axis that extends along the main axis of oval window 31, when banknote is in as shown in Figure 5 not folded state, the second polarization window 32 can have second axis of polarization that is basically parallel to first axis of polarization, but when banknote was in folded state as shown in Figure 6, first and second axis of polarization were basic vertical mutually.Also may make polarization window 31 have different axis of polarization, thereby when two polarization windows are aimed at, can produce more interesting optical design or effect with 32 different piece.
Therefore, in Fig. 5 and embodiment shown in Figure 6, the first and second polarization windows have formed a self-verifying security device together, the true and false that optical devices that it need not to add or equipment can the checking security devices.Though be to utilize banknote to check another polarization window on this banknote another part among this embodiment, also can check polarization window on another similar bill with it with first polarization window.
Transparent polarization window can in all sorts of ways and make.In a kind of possible method, can in manufacture process, stretch to the basement membrane of making by transparent plastic, thereby make crystal or aligning of molecule in this plastic sheeting produce difference with direction along some directions.In another approach, can adopt a kind of polymer dispersed liquid crystal (PDLC) film to form transparent, a unmarked part of essence or polarization window.The principal character of PDLC film is: it is a film that is generally 10 to 25 microns polymeric material, contains micron-sized nematic liquid crystal drop.
This film can produce like this,, makes the emulsifying mixture of polymkeric substance, water and liquid crystal that is, thereby produces a kind of so-called to row curve aligning phase (NCAP) film.Other method of producing the PDLC film comprises: make the homogeneous solution polymerization of liquid crystal and prepolymer.When final polymkeric substance forms, liquid crystal " is separated ", it is desirable to become the discrete droplets form.This technology is commonly called " being separated of polymerization initiation " (PIPS), and is used for producing the PDLC film.Polymerization can by heating when (for example at epoxy resin or other rigidizer) or ultraviolet (UV) light (for example adopt acrylate or mercaptan-alkene (thiol-ene) system.The PDLC film can be as coated opaque mark layer to form the transparent substrates of banknote, perhaps can be used as coating and be coated to transparent, the unmarked part of essence of banknote and form a polarization window.
Referring to Fig. 7 and Fig. 8, wherein show banknote 40 according to fourth embodiment of the invention.Banknote 40 is similar to the banknote 30 of Fig. 5 and Fig. 6, and wherein corresponding part is represented with corresponding label.The difference of banknote 40 and banknote 30 is the replacement with the polarization window, transparent, unmarked first of essence or window 5 comprise that first More who is made up of the fine rule of one group of tight spacing responds to the self-checking unit of pattern 41 forms, simultaneously, transparent unmarked second portion of essence or window 4 comprise that the More who also is made up of the fine rule of one group of tight spacing responds to the false proof device that pattern 42 forms.
As shown in Figure 7, first More responds to the extension that the fine rule of pattern 41 is parallel to each other substantially along the direction of crossing banknote 40, the extension that the fine rule that second More responds to pattern 42 then is parallel to each other substantially along the longitudinal axis of banknote 42.Therefore, when along fold line 12 banknote 40 being folded up and first and second windows 4 and 5 being aimed at mutually, and when under transmitted light, stacked More being responded to pattern 41 and 42 and observes, can find produce a series of dark bands 44 that are called as talbot (Talbot) striped, these stripeds are oblique extension on banknote after folding shown in Figure 8.These stripeds 44 can make first and second Mo Er induction pattern 41 and 42 be difficult to distinguish.Perhaps, when the More responded to pattern overlapping, described striped can be strengthened described pattern, produced the optical effect of a reinforcement.
Yet, should be appreciated that the orientation that first and second Mores respond to the line group of pattern can change.For example, if the More among Fig. 7 responds to pattern 41, line group in 42 is parallel to the oblique extension of main axis of oval window 4 and 5, then in folding back banknote shown in Figure 8, it will be vertical with 42 line group basically that first and second Mores respond to pattern 41, and produce a similar talbot striped.
Each More responds to pattern 41,42 different piece can have not collinear group that extends along different directions, thereby when window 4 and 5 on the banknote of doubling on time, may produce more interesting Moire effect, make the talbot striped form predetermined shape or image.
In transparent window 5 and 4, form line group that the More responds to pattern 41 and 42 and can or print each bar line by belling on the transparent unmarked part of substrate 2 and form, for example with gravure printing technique or with photogravure or offset printing process.
In the embodiment shown in Fig. 7 and 8, first and second Mores in the transparent window 5 and 4 respond to pattern 41 and 42 and have constituted a kind of self-verifying security device that need not extraneous check with optical devices or equipment together.In addition, though can utilize the banknote that in a transparent window, has the first induction pattern to check another More in the transparent window on another part of same banknote to respond to pattern, also can check the More in the transparent window that is arranged on another similar banknote to respond to pattern with it.
At least some embodiment of the present invention, particularly third and fourth embodiment and first embodiment provide a kind of observation that sees through window to check the ability of a false proof device, comprise self-checking unit in the described window, this device can be orientated with different angles in the flexible anti counterfeit bill of for example banknote and so on, bill is reversed and produce the observing effect of dynamic change, rather than the static effect that only produces in one direction.For example, can reversing or rotate and change by the light amount of polarization window transmission along with bill.When self-checking unit is under the situation of an optical lens, reversing of false proof bill may make the image warping that forms false proof device, respond to the More under the situation of pattern, the Moire effect that produces owing to pattern overlapping may along with two Mores respond to pattern respect to one another reverse or rotate skew or frequency change take place.
(not expression in the accompanying drawings) in yet another embodiment of the present invention, be provided with a flexible banknote or other false proof bill, wherein transparent, the unmarked part of essence or " window " have self-checking unit, this device comprises the first and the false proof device with this image second portion formation of an image, when and first and second parts that make image folding flexible banknote or other false proof bill on time, these two parts can form a complete image.The first of image can be printed or imitation die stamping in window, on the part of the substrate that the second portion of image can be arranged on that another is transparent, cover in the unmarked window of essence or by opaque coating.Preferably, the second portion of image is hidden under the reflected light situation in the opaque coating, but it is visible under the transmitted light situation, and first and second parts that make image when banknote is folded up are on time, and whole image is visible under the transmitted light situation.
The advantage of each embodiment of above-mentioned self-verifying security documents is that they can form with relatively low one-tenth originally by the manufacturing process of one or two step.Under many circumstances, this self-checking unit and false proof device can form for example intaglio printing process in the printing of single and/or embossed process.Also have, the false proof bill that is formed by the flexible substrates of transparent plastic material is tougher and durable, can crooked, distortion repeatedly and folding after still do not have to wear and tear significantly.
Should be appreciated that, under the situation that does not depart from the scope of the invention or spirit, can make many variations and change each above-mentioned embodiment.For example, two or more transparent windows that comprise identical or different type self-checking unit can be set on the diverse location of a false proof bill, be positioned at the locational a plurality of false proof devices in lateral separation of this false proof bill in order to check.

Claims (16)

1. false proof bill, comprise a sheet material that forms by the substrate of tape label, described sheet material has a part that is formed by transparent plastic material, wherein said transparent part comprises verifying attachment, this verifying attachment comprises an optical filter or polarization filter, or one interfere feature, so that the false proof device on another different sheet materials is tested.
2. false proof bill as claimed in claim 1 is characterized in that described verifying attachment comprises an optical filter, is used to observe the zone with the metamerism ink printing on another different sheet materials.
3. false proof bill as claimed in claim 2 is characterized in that, described optical filter is to be arranged to generate the limited or wavelength environment that changes, so that disclose the change color characteristic in the zone of printing with metamerism printing ink.
4. as claim 2 or 3 described false proof bills, it is characterized in that described optical filter is the colour light filter sheet.
5. false proof bill as claimed in claim 4 is characterized in that, described optical filter is to make like this, that is, sneak into pigment in polymkeric substance and make the described transparent part of described sheet material painted when producing the plastic sheeting substrate.
6. false proof bill as claimed in claim 4 is characterized in that, described optical filter is to apply painted varnish or the coating of one deck by the described transparent part to described sheet material to form.
7. false proof bill as claimed in claim 1 is characterized in that, described verifying attachment comprises one first transparent polarization window, is used to check the false proof device that comprises one second transparent polarization window on another different sheet materials.
8. false proof bill as claimed in claim 7, it is characterized in that, the described first transparent polarization window has one first plane polarization axis, the described second transparent polarization window has one second plane polarization axis, these two windows are to be provided with like this, that is, when they mutually on time, the light intensity that sees through window reduces.
9. as claim 7 or 8 described false proof bills, it is characterized in that, the part that comprises the first polarization window of described sheet material can be reversed or rotates with respect to the second polarization window, so that these two polarization windows are reduced the punctual light intensity that sees through them mutually.
10. as each described false proof bill in the claim 7 to 9, it is characterized in that each polarization window all is to form like this, that is, in process of production along some direction stretching transparent plastic substrate.
11. as each described false proof bill in the claim 7 to 9, it is characterized in that described transparent plastic substrate comprises liquid crystal, so that form one or more polarization windows.
12. as each described false proof bill in the claim 7 to 9, it is characterized in that, at least one of described sheet material transparent, applied one on the unmarked part of essence and contained the coating of liquid crystal, so that form a polarization window.
13. false proof bill as claimed in claim 1, it is characterized in that, described verifying attachment comprises that one has the interference feature of the first line group or some group, described false proof device is included in one second line group or the some group on another different sheet materials, when described verifying attachment and false proof device on time, can produce an interference effect.
14. false proof bill as claimed in claim 1 is characterized in that, described verifying attachment comprises that one is the interference feature that the More responds to pattern form, so that the false proof device that another More responds to pattern form that is on another different sheet materials is tested.
15., it is characterized in that described interference feature is to be printed on the described part of described sheet material as claim 13 or 14 described false proof bills.
16., it is characterized in that described interference feature is by embossed or etching and be printed on the described transparent part of described sheet material as claim 13 or 14 described false proof bills.
CNB021482527A 1996-10-10 1997-10-08 Anti-fake securency with detecting device Expired - Fee Related CN1235752C (en)

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DE69709142D1 (en) 2002-01-24
JP2000505738A (en) 2000-05-16

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